Protective base rail



FIG. 1 is a fragmentary perspective view of a protective base rail showing my new design;

FIG. 2 is a fragmentary rear elevational view thereof;

FIG. 3 is a fragmentary top plan view thereof;

FIG. 4 is a fragmentary front elevational view thereof; and,

FIG. 5 is a fragmentary bottom plan view thereof. 

The ornamental design for a protective base rail, as shown and described. 